Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of glass material, the fifth lens is made of plastic material, the sixth lens is made of glass material, and the seventh lens is made of plastic material. The camera optical lens further satisfies specific conditions.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese PatentApplication Ser. No. 201711366920.5 and Ser. No. 201711368564.0 filed onDec. 18, 2017, the entire content of which is incorporated herein byreference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lensshown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG.1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lensshown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown inFIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5.

FIG. 9 is a schematic diagram of a camera optical lens in accordancewith a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lensshown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown inFIG. 9;

FIG. 12 presents the field curvature and distortion of the cameraoptical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera opticallens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of thepresent invention, the camera optical lens 10 comprises 7 lenses.Specifically, from the object side to the image side, the camera opticallens 10 comprises in sequence: an aperture S1, a first lens L1, a secondlens L2, a third lens L3, a fourth lens L4, a fifth lens L5, a sixthlens L6 and a seventh lens L7. Optical element like optical filter GFcan be arranged between the seventh lens L7 and the image surface S1.The first lens L1 is made of plastic material, the second lens L2 ismade of plastic material, the third lens L3 is made of plastic material,the fourth lens L4 is made of glass material, the fifth lens L5 is madeof plastic material, the sixth lens L6 is made of glass material, theseventh lens L7 is made of plastic material;

Here, the focal length of the whole camera optical lens 10 is defined asf, the focal length of the first lens is defined as f1. The cameraoptical lens 10 further satisfies the following condition:−10≤f1/f≤−3.1. Condition −10≤f1/f≤−3.1 fixes the negative refractivepower of the first lens L1. If the upper limit of the set value isexceeded, although it benefits the ultra-thin development of lenses, butthe negative refractive power of the first lens L1 will be too strong,problem like aberration is difficult to be corrected, and it is alsounfavorable for wide-angle development of lens. On the contrary, if thelower limit of the set value is exceeded, the negative refractive powerof the first lens L1 becomes too weak, it is then difficult to developultra-thin lenses. Preferably, the following condition shall besatisfied, −9.9≤f1/f≤−3.2.

The refractive power of the fourth lens L4 is n4. Here the followingcondition should satisfied: 1.7≤n4≤2.2. This condition fixes therefractive power of the fourth lens L4, and refractive power within thisrange benefits the ultra-thin development of lenses, and it alsobenefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.708≤n4≤2.07.

The refractive power of the sixth lens L6 is n6. Here the followingcondition should satisfied: 1.7≤n6≤2.2. This condition fixes therefractive power of the sixth lens L6, and refractive power within thisrange benefits the ultra-thin development of lenses, and it alsobenefits the correction of aberration. Preferably, the followingcondition shall be satisfied, 1.714≤n6≤2.1.

The focal length of the sixth lens L6 is defined as f6, and the focallength of the seventh lens L7 is defined as f7. The camera optical lens10 should satisfy the following condition: 1≤f6/f7≤10, which fixes theratio between the focal length f6 of the sixth lens L6 and the focallength f7 of the seventh lens L7. A ratio within this range caneffectively reduce the sensitivity of lens group used in camera andfurther enhance the imaging quality. Preferably, the following conditionshall be satisfied, 1.2≤f6/f7≤9.95.

The curvature radius of the object side surface of the first lens L1 isdefined as R1, the curvature radius of the image side surface of thefirst lens L1 is defined as R2. The camera optical lens 10 furthersatisfies the following condition: 1.7≤(R1+R2)/(R1−R2)≤10, which fixesthe shape of the first lens L1, when the value is beyond this range,with the development into the direction of ultra-thin and wide-anglelenses, problem like aberration of the off-axis picture angle isdifficult to be corrected. Preferably, the condition2≤(R1+R2)/(R1−R2)≤9.45 shall be satisfied.

When the focal length of the camera optical lens 10 of the presentinvention, the focal length of each lens, the refractive power of therelated lens, and the total optical length, the thickness on-axis andthe curvature radius of the camera optical lens satisfy the aboveconditions, the camera optical lens 10 has—the advantage of highperformance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has a negativerefractive power.

The thickness on-axis of the first lens L1 is defined as d1. Thefollowing condition: 0.10≤d1≤0.3 should be satisfied. When the conditionis satisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.16≤d1≤0.24 shall be satisfied.

In this embodiment, the object side surface of the second lens L2 is aconvex surface relative to the proximal axis, its image side surface isa convex surface relative to the proximal axis, and it has positiverefractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the second lens L2 is f2. The following condition should besatisfied: 0.46≤f2/f≤1.45. When the condition is satisfied, the positiverefractive power of the second lens L2 is controlled within reasonablescope, the spherical aberration caused by the first lens L1 which hasnegative refractive power and the field curvature of the system then canbe reasonably and effectively balanced. Preferably, the condition0.74≤f2/f≤1.16 should be satisfied.

The curvature radius of the object side surface of the second lens L2 isdefined as R3, the curvature radius of the image side surface of thesecond lens L2 is defined as R4. The following condition should besatisfied: −1.94≤(R3+R4)/(R3−R4)≤−0.31, which fixes the shape of thesecond lens L2 and can effectively correct aberration of the cameraoptical lens. Preferably, the following condition shall be satisfied,−1.21≤(R3+R4)/(R3−R4)≤−0.39.

The thickness on-axis of the second lens L2 is defined as d3. Thefollowing condition: 0.21≤d3≤0.87 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.34≤d3≤0.7 shall besatisfied.

In this embodiment, the object side surface of the third lens L3 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has negativerefractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the third lens L3 is f3. The following condition should besatisfied: −22.61≤f3/f≤−2.69. When the condition is satisfied, the fieldcurvature of the system can be reasonably and effectively balanced forfurther improving the image quality. Preferably, the condition−14.13≤f3/f≤−3.36 should be satisfied.

The curvature radius of the object side surface of the third lens L3 isdefined as R5, the curvature radius of the image side surface of thethird lens L3 is defined as R6. The following condition should besatisfied: 2.67≤(R5+R6)/(R5−R6)≤24.15, which is beneficial for theshaping of the third lens L3, and bad shaping and stress generation dueto extra large curvature of surface of the third lens L3 can be avoided.Preferably, the following condition shall be satisfied,4.27≤(R5+R6)/(R5−R6)≤19.32.

The thickness on-axis of the third lens L3 is defined as d5. Thefollowing condition: 0.10≤d5≤0.31 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.16≤d5≤0.25 shall besatisfied.

In this embodiment, the object side surface of the fourth lens L4 is aconvex surface relative to the proximal axis, the image side surface ofthe fourth lens L4 is a concave surface relative to the proximal axis.The fourth lens L4 has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the fourth lens L4 is f4. The following condition should besatisfied: −8.52≤f4/f≤−1.34. When the condition is satisfied, theappropriate distribution of refractive power makes it possible that thesystem has better imaging quality and lower sensitivity. Preferably, thecondition −5.33≤f4/f≤−1.67 should be satisfied.

The curvature radius of the object side surface of the fourth lens L4 isdefined as R7, the curvature radius of the image side surface of thefourth lens L4 is defined as R8. The following condition should besatisfied: 0.89≤(R7+R8)/(R7−R8)≤5.52, which fixes the shaping of thefourth lens L4. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 1.43≤R7+R8)/(R7−R8)≤4.42.

The thickness on-axis of the fourth lens L4 is defined as d7. Thefollowing condition: 0.17≤d7≤0.66 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.28≤d7≤0.53 shall besatisfied.

In this embodiment, the object side surface of the fifth lens L5 is aconcave surface relative to the proximal axis, the image side surface ofthe fifth lens L5 is a convex surface relative to the proximal axis. Thefifth lens L5 has positive refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the fifth lens L5 is f5. The following condition should besatisfied: 0.19≤f5/f≤0.76, which can effectively make the light angle ofthe camera lens flat and reduces the tolerance sensitivity. Preferably,the condition 0.31≤f5/f≤0.61 should be satisfied.

The curvature radius of the object side surface of the fifth lens L5 isdefined as R9, the curvature radius of the image side surface of thefifth lens L5 is defined as R10. The following condition should besatisfied: 0.57≤(R9+R10)/(R9−R10)≤2.5, which fixes the shaping of thefifth lens L5. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 0.91≤(R9+R10)/(R9−R10)≤2.

The thickness on-axis of the fifth lens L5 is defined as d9. Thefollowing condition: 0.43≤d9≤1.69 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.69≤d9≤1.35 shall besatisfied.

In this embodiment, the object side surface of the sixth lens L6 is aconvex surface relative to the proximal axis, the image side surface ofthe sixth lens L6 is a concave surface relative to the proximal axis,and it has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the sixth lens L6 is f6. The following condition should besatisfied: −12.27≤f6/f≤−0.87. When the condition is satisfied, theappropriate distribution of refractive power makes it possible that thesystem has better imaging quality and lower sensitivity. Preferably, thecondition −7.67≤f6/f≤−1.09 should be satisfied.

The curvature radius of the object side surface of the sixth lens L6 isdefined as R11, the curvature radius of the image side surface of thesixth lens L6 is defined as R12. The following condition should besatisfied: 0.7≤(R11+R12)/(R11−R12)≤2.53, which fixes the shaping of thesixth lens L6. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 1.12≤(R11+R12)/(R11−R12)≤2.02.

The thickness on-axis of the sixth lens L6 is defined as d11. Thefollowing condition: 0.10≤d11≤0.31 should be satisfied. When thecondition is satisfied, it is beneficial for realization of theultra-thin lens. Preferably, the condition 0.16≤d11≤0.25 shall besatisfied.

In this embodiment, the object side surface of the seventh lens L7 is aconvex surface relative to the proximal axis, the image side surface ofthe seventh lens L7 is a concave surface relative to the proximal axis,and it has negative refractive power.

The focal length of the whole camera optical lens 10 is f, the focallength of the seventh lens L7 is f7. The following condition should besatisfied: −1.24≤f7/f≤−0.35. When the condition is satisfied, theappropriate distribution of refractive power makes it possible that thesystem has better imaging quality and lower sensitivity. Preferably, thecondition −0.77≤f7/f≤−0.44 should be satisfied.

The curvature radius of the object side surface of the seventh lens L7is defined as R13, the curvature radius of the image side surface of theseventh lens L7 is defined as R14. The following condition should besatisfied: 0.81≤(R13+R14)/(R13−R14)≤3.64, which fixes the shaping of theseventh lens L7. When beyond this range, with the development into thedirection of ultra-thin and wide-angle lens, the problem like chromaticaberration is difficult to be corrected. Preferably, the followingcondition shall be satisfied, 1.3≤(R13+R14)/(R13−R14)≤2.92.

The thickness on-axis of the seventh lens L7 is defined as d13. Thefollowing condition: 0.1≤d13≤0.6 should be satisfied. When the conditionis satisfied, it is beneficial for realization of the ultra-thin lens.Preferably, the condition 0.16≤d13≤0.48 shall be satisfied.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 6.07 mm, it is beneficial for therealization of ultra-thin lenses. Preferably, the total optical lengthTTL of the camera optical lens 10 is less than or equal to 5.79 mm.

In this embodiment, the aperture F number of the camera optical lens 10is less than or equal to 2.27. A large aperture has better imagingperformance. Preferably, the aperture F number of the camera opticallens 10 is less than or equal to 2.22.

With such design, the total optical length TTL of the whole cameraoptical lens 10 can be made as short as possible, thus theminiaturization characteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surfaceof the first lens L1 to the image surface).

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, thedescription below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the following, the unitof the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd νd S1 ∞  d0= 0.040 R1 1.6229  d1= 0.200 nd1 1.6713 ν119.24 R2 1.2957  d2= 0.020 R3 1.9886  d3= 0.429 nd2 1.5445 ν2 55.99 R4−132.8099  d4= 0.030 R5 2.9276  d5= 0.205 nd3 1.6713 ν3 19.24 R6 2.5851 d6= 0.562 R7 11.1477  d7= 0.348 nd4 1.9459 ν4 17.98 R8 6.3842  d8=0.331 R9 −3.4697  d9= 0.865 nd5 1.5352 ν5 56.09 R10 −0.8700 d10= 0.020R11 49.7422 d11= 0.205 nd6 1.7292 ν6 54.67 R12 12.6898 d12= 0.273 R133.5756 d13= 0.402 nd7 1.5388 ν7 56.07 R14 0.9025 d14= 0.719 R15 ∞ d15=0.210 ndg 1.5168 νg 64.17 R16 ∞ d16= 0.500

Where:

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the seventh lensL7;

R14: The curvature radius of the image side surface of the seventh lensL7;

R15: The curvature radius of the object side surface of the opticalfilter GF;

R16: The curvature radius of the image side surface of the opticalfilter GF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventhlens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the seventh lens L7;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF.

Table 2 shows the aspherical surface data of the camera optical lens 10in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −1.2681E+00 −1.1246E−01   1.2202E−01 −1.7685E−01 −7.2459E−02  4.9550E−02   1.2034E−01 −6.5153E−02 R2 −8.3480E+00   4.4758E−02−7.8601E−02   1.0492E−01 −2.9313E−01   5.8566E−02   1.8107E−01−8.4809E−02 R3 −1.8962E+01   2.6923E−02   5.9818E−02   1.5533E−01−1.3298E−01 −6.0340E−02   1.8636E−01 −8.6110E−02 R4 −9.8504E+01−2.6433E−03 −1.0297E−01   7.5748E−02   1.2620E−01   2.7930E−02  1.1957E−01 −1.1089E−01 R5   0.0000E+00 −3.6074E−02 −1.6353E−01−9.0603E−03   9.3579E−02   7.6667E−02 −5.8682E−02   2.5335E−02 R6  0.0000E+00 −4.4444E−02 −4.7141E−02 −4.8412E−02   4.2623E−02  6.7553E−02 −3.4771E−02   1.2558E−02 R7   5.6271E+01 −1.3891E−01−6.9699E−03 −1.8851E−02   2.6289E−02   1.1561E−02 −3.3738E−02  1.5856E−02 R8 −1.4580E+00 −1.0583E−01   7.6343E−04   2.6194E−03  1.0687E−03   1.7383E−03 −1.5481E−03   1.8660E−04 R9   1.6436E+00  1.3948E−02   2.1054E−02 −9.9802E−03 −2.8840E−05   1.3467E−03  3.6384E−04 −3.2125E−04 R10 −2.8139E+00 −8.1146E−02   3.3307E−02−4.7333E−04 −3.3559E−04 −5.6742E−05 −3.4846E−06 −1.6351E−06 R11  6.8925E+01   2.4122E−03 −1.1610E−03 −1.3635E−04 −1.7900E−04  3.0655E−05   7.3852E−06 −8.1133E−07 R12   1.9309E+01 −1.1044E−02−1.4768E−04 −8.2184E−05   6.8598E−07   2.5392E−06   4.4111E−07  9.8262E−08 R13 −1.0418E+01 −2.3426E−02 −3.2202E−04   1.5178E−04  2.4596E−05   1.5596E−06 −1.9803E−07 −9.8495E−08 R14 −4.6726E+00−2.4187E−02   3.4334E−03 −4.6377E−04   4.0938E−05 −2.4946E−06−2.5154E−08   1.1797E−08

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 areaspheric surface indexes.

IH: Image heighty=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, R1 and R2 represent respectively the objectside surface and image side surface of the first lens L1, R3 and R4represent respectively the object side surface and image side surface ofthe second lens L2, R5 and R6 represent respectively the object sidesurface and image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7. The data in thecolumn named “inflexion point position” are the vertical distances fromthe inflexion points arranged on each lens surface to the optic axis ofthe camera optical lens 10. The data in the column named “arrest pointposition” are the vertical distances from the arrest points arranged oneach lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion point Inflexion point Inflexion point number position1 position 2 R1 1 0.625 R2 1 0.605 R3 0 R4 1 0.595 R5 2 0.495 0.805 R6 20.625 0.775 R7 1 0.245 R8 1 0.355 R9 2 1.025 1.245 R10 1 1.105 R11 20.985 1.805 R12 2 0.815 1.895 R13 1 0.765 R14 1 0.795

TABLE 4 Arrest point Arrest point Arrest point number position 1position 2 R1 R2 1 0.915 R3 R4 1 0.695 R5 R6 R7 1 0.405 R8 1 0.615 R9R10 R11 1 1.345 R12 1 1.375 R13 1 1.405 R14 1 2.125

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 10 in the first embodiment. FIG. 4shows the field curvature and distortion schematic diagrams after lightwith a wavelength of 555 nm passes the camera optical lens 10 in thefirst embodiment, the field curvature S in FIG. 4 is a field curvaturein the sagittal direction, T is a field curvature in the meridiandirection.

Table 13 shows the various values of the embodiments 1, 2, 3 and thevalues corresponding with the parameters which are already specified inthe conditions.

As shown in Table 13, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.73 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 76.75°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 5 R d nd νd S1 ∞  d0= 0.040 R1 25.4797  d1= 0.200 nd1 1.6713 ν119.24 R2 12.6588  d2= 0.114 R3 2.5325  d3= 0.579 nd2 1.5445 ν2 55.99 R4−7.0478  d4= 0.030 R5 4.4880  d5= 0.200 nd3 1.6713 ν3 19.24 R6 3.0710 d6= 0.550 R7 13.6529  d7= 0.438 nd4 1.7174 ν4 29.50 R8 3.8479  d8=0.170 R9 −13.1769  d9= 1.060 nd5 1.5388 ν5 56.07 R10 −0.8210 d10= 0.020R11 20.4661 d11= 0.200 nd6 1.7550 ν6 51.16 R12 3.4055 d12= 0.403 R131.5679 d13= 0.200 nd7 1.5388 ν7 56.07 R14 0.6535 d14= 0.571 R15 ∞ d15=0.210 ndg 1.5168 νg 64.17 R16 ∞ d16= 0.500

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −9.7562E+01 −4.6727E−02   7.2961E−02 −4.7826E−02   1.9075E−02−5.5809E−02   9.7645E−02 −5.3245E−02 R2 −2.6538E+01 −8.4771E−02  1.3302E−01   2.9129E−02 −2.3310E−01   1.1148E−01   1.6564E−01−1.4396E−01 R3 −1.4532E+01   2.5472E−02   2.6600E−03   1.2175E−02−7.7262E−02 −7.9172E−02   2.2511E−01 −1.5543E−01 R4 −1.4264E+01−6.8277E−02 −6.4552E−02   1.2793E−01 −1.6203E−01   6.5072E−03  9.5402E−02 −5.3402E−02 R5   0.0000E+00 −6.3058E−02 −7.2265E−02  9.6131E−02 −7.5697E−02 −3.4853E−02   8.4927E−02 −2.4345E−02 R6  0.0000E+00 −6.4178E−02 −5.4449E−02   4.3955E−02 −2.9753E−02−2.6662E−02   4.2013E−02 −9.8493E−03 R7 −9.6290E+01 −1.2849E−01−5.1797E−03 −1.8306E−02   2.7942E−02   1.3772E−02 −3.3375E−02  1.3375E−02 R8   5.5719E+00 −1.0024E−01   3.7061E−03   3.2413E−03  6.1087E−04   1.7794E−03 −1.0847E−03   4.5264E−05 R9   4.2672E+01  6.3410E−04   2.1655E−02 −8.9917E−03   6.3220E−05   1.0619E−03  5.8293E−05 −1.5927E−04 R10 −3.1777E+00 −7.6250E−02   3.2704E−02−4.6694E−04 −4.1230E−04 −1.0812E−04 −3.6253E−05   1.6430E−06 R11  8.8110E+01 −1.4893E−02 −1.8223E−03 −4.0580E−04 −2.6095E−04  2.1707E−05   1.0417E−05   1.0697E−06 R12 −3.0272E+01 −1.6976E−02−1.7303E−03 −1.7814E−04   1.5185E−05   5.4702E−06   9.4801E−07  1.7934E−07 R13 −2.8785E+01 −4.3717E−02   1.8275E−03   3.6376E−04  1.5874E−05 −1.6084E−06 −4.2200E−07 −9.1929E−08 R14 −5.1295E+00−3.7457E−02   5.4377E−03 −4.0907E−04 −8.0313E−06   7.6617E−07  2.5206E−07 −1.9605E−08

Table 7 and table 8 show the inflexion points and the arrest pointdesign data of the camera optical lens 20 lens in embodiment 2 of thepresent invention.

TABLE 7 Inflexion point Inflexion point Inflexion point number position1 position 2 R1 3 0.335 0.555 R2 1 0.845 R3 1 0.705 R4 0 R5 2 0.4750.955 R6 1 0.555 R7 1 0.215 R8 2 0.525 1.105 R9 2 0.675 1.305 R10 21.085 1.515 R11 2 0.525 1.805 R12 2 0.665 1.985 R13 1 0.455 R14 1 0.625

TABLE 8 Arrest point Arrest point Arrest point number position 1position 2 R1 R2 R3 R4 R5 1 0.775 R6 1 0.895 R7 1 0.365 R8 2 1.065 1.125R9 2 1.085 1.395 R10 R11 1 0.865 R12 1 1.245 R13 1 1.045 R14 1 1.845

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 20 in the second embodiment. FIG.8 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 20 inthe second embodiment.

As shown in Table 13, the second embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.716 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 76.91°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 9 and table 10 show the design data of the camera optical lens 30in embodiment 3 of the present invention.

TABLE 9 R d nd νd S1 ∞  d0= 0.040 R1 38.1419  d1= 0.200 nd1 1.6713 ν119.24 R2 15.1871  d2= 0.134 R3 2.5908  d3= 0.583 nd2 1.5445 ν2 55.99 R4−8.0072  d4= 0.030 R5 2.6923  d5= 0.205 nd3 1.6713 ν3 19.24 R6 2.1049 d6= 0.528 R7 9.5659  d7= 0.430 nd4 1.7174 ν4 29.50 R8 3.9168  d8= 0.235R9 −9.7910  d9= 1.125 nd5 1.5388 ν5 56.07 R10 −0.7502 d10= 0.020 R1121.9492 d11= 0.200 nd6 1.9108 ν6 35.25 R12 3.7315 d12= 0.359 R13 3.3295d13= 0.200 nd7 1.5388 ν7 56.07 R14 0.7925 d14= 0.554 R15 ∞ d15= 0.210ndg 1.5168 νg 64.17 R16 ∞ d16= 0.500

Table 10 shows the aspherical surface data of each lens of the cameraoptical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1   0.0000E+00 −6.1253E−02   7.7855E−02 −4.7093E−02   1.4643E−02−6.3589E−02   1.1726E−01 −6.2022E−02 R2 −9.8944E+01 −1.0215E−01  1.5491E−01 −2.8679E−02 −1.7908E−01   1.5021E−01   6.8117E−02−9.3395E−02 R3 −1.4593E+01   1.6500E−02   7.9314E−03   1.2959E−02−7.1078E−02 −8.0253E−02   2.2772E−01 −1.4719E−01 R4 −1.9162E+01−7.2519E−02 −4.6469E−02   1.3217E−01 −1.7635E−01   1.1839E−02  1.0930E−01 −6.4342E−02 R5   0.0000E+00 −6.6379E−02 −4.9243E−02  9.5750E−02 −7.8488E−02 −2.4114E−02   6.5963E−02 −2.3383E−02 R6  0.0000E+00 −6.3268E−02 −4.6140E−02   5.1146E−02 −2.1205E−02−3.6638E−02   4.1090E−02 −1.0725E−02 R7 −9.6314E+01 −1.1831E−01−5.2826E−03 −1.6035E−02   2.7108E−02   1.5875E−02 −2.8566E−02  9.6492E−03 R8   5.5397E+00 −1.0275E−01   4.0931E−03   3.3646E−03  8.0271E−04   1.7293E−03 −1.0312E−03   7.1692E−05 R9   3.1569E+01−9.8972E−04   2.1810E−02 −8.9232E−03 −6.2937E−05   9.7557E−04  4.5617E−05 −1.3446E−04 R10 −3.3377E+00 −7.9303E−02   3.1816E−02−8.0968E−04 −4.6435E−04 −1.2561E−04 −3.5168E−05   1.3112E−06 R11  8.4096E+01 −1.7858E−02 −2.6762E−05 −2.8319E−04 −2.9196E−04  1.4064E−05   9.1660E−06   9.5049E−07 R12 −5.5273E+01 −1.3455E−02−2.0880E−03 −1.5508E−04   2.2644E−05   6.3126E−06   1.2424E−06  2.2424E−07 R13 −2.4401E+01 −4.3946E−02   2.5780E−03   3.3133E−04  2.3123E−05   6.0922E−07 −1.3463E−07 −7.7852E−08 R14 −5.1088E+00−3.8678E−02   5.7887E−03 −4.1195E−04 −8.8782E−06   5.6263E−07  2.4421E−07 −7.8938E−09

Table 11 and table 12 show the inflexion points and the arrest pointdesign data of the camera optical lens 30 lens in embodiment 3 of thepresent invention.

TABLE 11 Inflexion point Inflexion point Inflexion point Inflexion pointnumber position 1 position 2 position 3 R1 1 0.205 R2 3 0.265 0.6150.835 R3 1 0.725 R4 0 R5 1 0.655 R6 1 0.725 R7 1 0.265 R8 2 0.515 1.105R9 2 0.825 1.205 R10 2 1.155 1.405 R11 2 0.475 1.855 R12 2 0.615 1.905R13 2 0.545 1.845 R14 2 0.665 2.585

TABLE 12 Arrest point Arrest point Arrest point number position 1position 2 R1 1 0.375 R2 R3 R4 R5 R6 R7 1 0.445 R8 2 0.965 1.205 R9 R10R11 1 0.815 R12 1 1.195 R13 2 1.035 2.285 R14 1 1.855

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral colorschematic diagrams after light with a wavelength of 470 nm, 555 nm and650 nm passes the camera optical lens 30 in the third embodiment. FIG.12 shows the field curvature and distortion schematic diagrams afterlight with a wavelength of 555 nm passes the camera optical lens 30 inthe third embodiment.

As shown in Table 13, the third embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 1.716 mm, the full vision field image height is 2.994 mm, thevision field angle in the diagonal direction is 76.89°, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

TABLE 13 Embodi- Embodi- Embodi- ment 1 ment 2 ment 3 f 3.805 3.7743.775 f1 −12.597 −37.366 −37.376 f2 3.591 3.485 3.654 f3 −43.011 −15.223−16.574 f4 −16.218 −7.565 −9.493 f5 1.937 1.572 1.440 f6 −23.340 −5.419−4.937 f7 −2.358 −2.245 −1.979 f6/f7 9.900 2.414 2.495 (R1 + R2)/(R1 −R2) 8.922 2.975 2.323 (R3 + R4)/(R3 − R4) −0.970 −0.471 −0.511 (R5 +R6)/(R5 − R6) 16.097 5.334 8.166 (R7 + R8)/(R7 − R8) 3.680 1.785 2.387(R9 + R10)/(R9 − R10) 1.669 1.133 1.166 (R11 + R12)/(R11 − R12) 1.6851.399 1.410 (R13 + R14)/(R13 − R14) 1.675 2.429 1.625 f1/f −3.310 −9.900−9.900 f2/f 0.944 0.923 0.968 f3/f −11.303 −4.033 −4.390 f4/f −4.262−2.004 −2.514 f5/f 0.509 0.417 0.381 f6/f −6.134 −1.436 −1.308 f7/f−0.620 −0.595 −0.524 d1 0.200 0.200 0.200 d3 0.429 0.579 0.583 d5 0.2050.200 0.205 d7 0.348 0.438 0.430 d9 0.865 1.060 1.125 d11 0.205 0.2000.200 d13 0.402 0.200 0.200 Fno 2.200 2.200 2.200 TTL 5.320 5.446 5.514d7/TTL 0.065 0.081 0.078 n1 1.6713 1.6713 1.6713 n2 1.5445 1.5445 1.5445n3 1.6713 1.6713 1.6713 n4 1.9459 1.7174 1.7174 n5 1.5352 1.5388 1.5388n6 1.7292 1.7550 1.9108 n7 1.5388 1.5388 1.5388

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera optical lens comprising, from an objectside to an image side in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens;wherein the first lens has a negative refractive power with a convexobject side surface and a concave image side surface; the second lenshas a positive refractive power with a convex object side surface and aconvex image side surface; the third lens has a negative refractivepower with a convex object side surface and a concave image sidesurface; the fourth lens has a negative refractive power with a convexobject side surface and a concave image side surface; the fifth lens hasa positive refractive power with a concave object side surface and aconvex image side surface; the sixth lens has a negative refractivepower with a convex object side surface and a concave image sidesurface; the seventh lens has a negative refractive power with a convexobject side surface and a concave image side surface; the camera opticallens further satisfies the following conditions:−10≤f1/f≤−3.1;1.7≤n4≤2.2;1.7≤n6≤2.2;1≤f6/f7≤10;1.7≤(R1+R2)/(R1−R2)≤10; where f: the focal length of the camera opticallens; f1: the focal length of the first lens; f6: the focal length ofthe sixth lens; f7: the focal length of the seventh lens; n4: therefractive power of the fourth lens; n6: the refractive power of thesixth lens; R1: the curvature radius of object side surface of the firstlens; R2: the curvature radius of image side surface of the first lens.2. The camera optical lens as described in claim 1, wherein the firstlens is made of plastic material, the second lens is made of plasticmaterial, the third lens is made of plastic material, the fourth lens ismade of glass material, the fifth lens is made of plastic material, thesixth lens is made of glass material, the seventh lens is made ofplastic material.
 3. The camera optical lens as described in claim 1further satisfying the following conditions:−9.9≤f1/f≤−3.2;1.708≤n4≤2.07;1.714≤n6≤2.1;1.2≤f6/f7≤9.95;2≤(R1+R2)/(R1−R2)≤9.45.
 4. The camera optical lens as described in claim1, wherein the camera optical lens further satisfies the followingconditions:0.10≤d1≤0.3; where d1: the thickness on-axis of the first lens.
 5. Thecamera optical lens as described in claim 4 further satisfying thefollowing conditions:0.16≤d1≤0.24.
 6. The camera optical lens as described in claim 1,wherein the camera optical lens further satisfies the followingconditions:0.46≤f2/f≤1.45;−1.945(R3+R4)/(R3−R4)≤−0.31;0.21≤d3≤0.87; where f: the focal length of the camera optical lens; f2:the focal length of the second lens; R3: the curvature radius of theobject side surface of the second lens; R4: the curvature radius of theimage side surface of the second lens; d3: the thickness on-axis of thesecond lens.
 7. The camera optical lens as described in claim 6 furthersatisfying the following conditions:0.74≤f2/f≤1.16;−1.21≤(R3+R4)/(R3−R4)≤−0.39;0.34≤d3≤0.7.
 8. The camera optical lens as described in claim 1, whereinthe camera optical lens further satisfies the following conditions:−22.61≤f3/f≤−2.69;2.67≤(R5+R6)/(R5−R6)≤24.15;0.10≤d5≤0.31; where f: the focal length of the camera optical lens; f3:the focal length of the third lens; R5: the curvature radius of theobject side surface of the third lens; R6: the curvature radius of theimage side surface of the third lens; d5: the thickness on-axis of thethird lens.
 9. The camera optical lens as described in claim 8 furthersatisfying the following conditions:−14.13≤f3/f5−3.36;4.27≤(R5+R6)/(R5−R6)≤19.32;0.16≤d5≤0.2.
 10. The camera optical lens as described in claim 1,wherein the camera optical lens further satisfies the followingconditions:−8.52≤f4/f≤−1.34;0.89≤(R7+R8)/(R7−R8)≤5.52;0.17≤d7≤0.66; where f: the focal length of the camera optical lens; f4:the focal length of the fourth lens; R7: the curvature radius of theobject side surface of the fourth lens; R8: the curvature radius of theimage side surface of the fourth lens; d7: the thickness on-axis of thefourth lens.
 11. The camera optical lens as described in claim 10further satisfying the following conditions:−5.33≤f4/f≤−1.67;1.43≤(R7+R8)/(R7−R8)≤4.42;0.28≤d7≤0.53.
 12. The camera optical lens as described in claim 1,wherein the camera optical lens further satisfies the followingconditions:0.19≤f5/f≤0.76;0.57≤(R9+R10)/(R9−R10)≤2.5;0.43≤d9≤1.69; where f: the focal length of the camera optical lens; f5:the focal length of the fifth lens; R9: the curvature radius of theobject side surface of the fifth lens; R10: the curvature radius of theimage side surface of the fifth lens; d9: the thickness on-axis of thefifth lens.
 13. The camera optical lens as described in claim 12 furthersatisfying the following conditions:0.31≤f5/f≤0.61;0.91≤(R9+R10)/(R9−R10)≤2;0.69≤d9≤1.35.
 14. The camera optical lens as described in claim 1,wherein the camera optical lens further satisfies the followingconditions:−12.27≤f6/f≤−0.87;0.7≤(R11+R12)/(R11−R12)≤2.53;0.10≤d11≤0.31; where f: the focal length of the camera optical lens; f6:the focal length of the sixth lens; R11: the curvature radius of theobject side surface of the sixth lens; R12: the curvature radius of theimage side surface of the sixth lens; d11: the thickness on-axis of thesixth lens.
 15. The camera optical lens as described in claim 14 furthersatisfying the following conditions:7.67≤f6/f≤−1.09;1.12≤(R11+R12)/(R11−R12)≤2.02;0.16≤d11≤0.25.
 16. The camera optical lens as described in claim 1,wherein the camera optical lens further satisfies the followingconditions:0.81≤(R13+R14)/(R13−R14)≤3.64;−1.24≤f7/f≤−0.350.1≤d13≤0.6; where f: the focal length of the camera optical lens; f7:the focal length of the seventh lens; d13: the thickness on-axis of theseventh lens; R13: the curvature radius of the object side surface ofthe seventh lens; R14: the curvature radius of the image side surface ofthe seventh lens.
 17. The camera optical lens as described in claim 16further satisfying the following conditions:1.3≤(R13+R14)/(R13−R14)≤2.92;−0.77≤f7/f≤−0.44;0.16≤d13≤0.48.
 18. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 6.07 mm.
 19. The camera optical lens as described inclaim 18, wherein the total optical length TTL of the camera opticallens is less than or equal to 5.79 mm.
 20. The camera optical lens asdescribed in claim 1, wherein the aperture F number of the cameraoptical lens is less than or equal to 2.27.
 21. The camera optical lensas described in claim 20, wherein the aperture F number of the cameraoptical lens is less than or equal to 2.22.